Colour names, HEX, RGB and HSL values.
✍️ 3 exercises + code challenge in this lessonColours in HTML and CSS can be written in several ways:
tomato, navy, teal (about 140 names are supported).#RRGGBB, e.g. #2563EB.rgb(37, 99, 235), each value from 0 to 255.rgba(37, 99, 235, 0.5).hsl(221, 83%, 53%).Mastering HTML Colors helps you write clean and reliable HTML code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.
<h2 style="background-color: tomato; color: white;">Colour name</h2>
<h2 style="background-color: #2563EB; color: white;">HEX #2563EB</h2>
<h2 style="background-color: rgb(20, 184, 166); color: white;">rgb(20, 184, 166)</h2>
<h2 style="background-color: rgba(37, 99, 235, 0.4);">rgba with 40% opacity</h2>
<h2 style="background-color: hsl(45, 93%, 47%);">hsl(45, 93%, 47%)</h2>Check what you learned in “HTML Colors”.
Write the colour value in HEX for pure white.
<p style="color: ;">Text</p>
What does the "a" in rgba() control?
Give the <div> the background colour rgb(255, 99, 71) (tomato).
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